In this episode of Longevity by Design, host Dr. Gil Blander sits down with Dr. Andrea Maier, Professor in Medicine and Director of the NUS Academy for Healthy Longevity at the National University of Singapore’s School of Medicine. They explore what the evidence shows on supplements, and why “test, then treat” beats guesswork.

Andrea unpacks a review of over 5 million people: multivitamins may support memory and lower systolic blood pressure in some older or at-risk groups, but offer little for healthy adults. She also reports lab audits of Nicotinamide Mononucleotide (NMN) and urolithin A, in which many products fell short of the label claims.

She then sorts buzzworthy compounds like alpha-ketoglutarate, spermidine, curcumin, and melatonin by mechanism, trial quality, and fit. Her rule stays simple: measure what you can, match the dose to the need, and track outcomes with walking speed, grip strength, steps, and wearable sleep data over time, not once.

Guest-at-a-Glance

💡 Name: Dr. Andrea Maier
💡 What she does: Professor in Medicine, Healthy Ageing and Dementia Research, and Director of the NUS Academy for Healthy Longevity
💡 Company: the National University of Singapore’s School of Medicine
💡 Noteworthy: She runs human trials on supplements and aging, audits label accuracy in the lab, and pushes a “measure first” approach using biomarkers, wearables, and simple strength tests.
💡 Where to find her: https://www.linkedin.com/in/andreamaierprof
💡 Guest Company Website: https://discovery.nus.edu.sg/19564-andrea-britta-maier

Episode highlights:

[00:00:00]: Introduction
[00:01:02]: Overview of Evidence-Based Clinical Practice
[00:02:16]: Multivitamins and Minerals: Usage and Population Trends
[00:04:08]: Systematic Review Findings on Multivitamins and Cognitive Health
[00:05:44]: Who Benefits Most from Multivitamin Supplementation
[00:06:57]: Personalized Nutrition and the Case for Targeted Supplementation
[00:08:21]: Ongoing Clinical Trials on Multivitamins and Biological Age
[00:09:19]: Supplement Quality: Label Claims Versus Actual Content
[00:12:14]: Navigating Supplement Quality and Consumer Guidance
[00:14:53]: Novel Longevity Compounds: Alpha-Ketoglutarate
[00:17:47]: Alpha-Ketoglutarate: Human Evidence and Population Focus
[00:18:29]: Spermidine: Dietary Sources and Human Evidence
[00:21:25]: Curcumin: Mechanisms, Evidence, and Target Populations
[00:24:54]: Evaluating Supplements for Clinical Use
[00:27:08]: Scientific Approach to Supplement Research
[00:29:26]: The Role of Independent Research in Supplement Evaluation
[00:32:37]: Melatonin: Sleep, Jet Lag, and Circadian Rhythm
[00:37:25]: Practical Melatonin Use for Travel and Sleep Optimization
[00:41:05]: Digital Biomarkers: Definition and Emerging Role
[00:45:54]: Integrating Digital Biomarkers into Healthcare Practice
[00:49:05]: Physical Function Tests: Grip Strength and Sit-to-Stand
[00:59:48]: NAD Precursors: NMN, NR, and Human Trials
[01:05:23]: NAD Testing: Current Landscape and Future Directions
[01:07:24]: Final Takeaways and Closing Remarks

For science-backed ways to live a healthier, longer life, download InsideTracker's Top 5 biomarkers for longevity eBook at insidetracker.com/podcast

In this episode of Longevity by Design, host Dr. Gil Blander sits down with Dr. Uri Alon, Professor at Weizmann Institute of Science. They explore a systems view of aging that treats longevity as a solvable model, not a grab bag of disconnected theories.

Uri explains aging with a simple story: houses make garbage, trucks remove it, and the village has a threshold for how much damage it can handle. In the body, “garbage” can include damaged and senescent cells, “trucks” can include immune cleanup, and “houses” can include long-lived cells and stem cells that drift over time. The model links this balance to death, disease, and steady decline, and it helps predict which interventions actually change it.

They also revisit the role of genes. Uri argues that lifespan looks closer to 50% heritable today after correcting for early, non-aging deaths in older datasets. The rest comes from the environment and biological noise, which regular sleep may help reduce.

Guest-at-a-Glance

💡 Name: Dr. Uri Alon
💡 What they do: Professor of Molecular Cell Biology and systems biology researcher
💡 Company: Weizmann Institute of Science
💡 Noteworthy: He developed the network motifs framework and uses simple models to explain aging as a balance between damage, cleanup capacity, and robustness thresholds.
💡 Where to find him: https://www.linkedin.com/in/urialonw/

Episode highlights:

[00:00:00]: Introduction
[00:01:41]: Transition from Physics to Biology and Systems Thinking
[00:03:06]: Systems Perspective vs. Traditional Biology
[00:03:45]: Theoretical Models and Patterns in Aging
[00:06:29]: Network Motifs and Biological Circuits
[00:10:26]: Applying Systems Biology to Aging and Healthspan
[00:12:27]: The Village Model: Framework for Understanding Aging
[00:19:24]: Interventions: Exercise, Robustness, and Lifespan Limits
[00:22:41]: Multi-level Modeling: From High-Level to Molecular Detail
[00:23:56]: Centenarians, Genetic Variants, and Disease Resistance
[00:25:26]: Menopause, Aging Genes, and Rare Variants
[00:26:57]: Heritability of Lifespan: Revisiting Twin Studies
[00:29:23]: Lifestyle, Genetics, and Diminishing Returns
[00:33:23]: Biological Noise, Environment, and Variability
[00:36:23]: Developmental Stochasticity and Lifespan Differences
[00:38:20]: Future Impact of Medicine on Genetic Influence
[00:40:36]: Polygenic Scores, Planning, and Public Perception
[00:41:25]: Genetic Circuits and Longevity Pathways
[00:44:22]: Epigenetic Reprogramming vs. Senolytics
[00:47:16]: Technological Readiness and Combining Interventions
[00:48:44]: Other Promising Interventions: Rapamycin, Engineering, and Targeted Approaches
[00:51:24]: GLP-1, SGLT2 Inhibitors, and Robustness
[00:53:01]: Vascular Health, Immune Function, and Lifespan Extension
[00:56:28]: Quick Fire Round: Myths, Principles, and Predictors
[00:59:04]: Key Takeaways: Systems View and the Equation of Aging
[01:02:07]: Closing Remarks and Farewell

For science-backed ways to live a healthier, longer life, download InsideTracker's Top 5 biomarkers for longevity eBook at insidetracker.com/podcast

In this episode of Longevity by Design, host Dr. Gil Blander sits down with Dr. Paola Sebastiani, Professor of Biostatistics at Tufts Clinical and Translational Science Institute. They explore what centenarians reveal about reaching 100, and why there’s no single longevity gene.

Paola explains that studies keep finding many small genetic effects, which makes polygenic risk scores hard to use for personal prediction. She says progress depends on bigger cohorts and new analyses that include structural DNA changes and mitochondrial DNA. She also grounds the hype: for people born in 1900, only 0.2% of men and about 1% of women reached 100.

Healthspan sits at the center of the story. Paola ties exceptional aging to delayed disease, lower inflammation, and biomarker profiles that stay more youthful. She highlights diet as a realistic lever, with centenarians showing stable, balanced eating, steadier protein intake, and metabolite signals linked to vegetables and dark chocolate.

💡 Name: Dr. Paola Sebastiani
💡 What they do: Professor of Biostatistics
💡 Company: Tufts Clinical and Translational Science Institute
💡 Noteworthy: She analyzes genetic, proteomic, and metabolomic data from centenarians to map longevity signatures, with a focus on APOE, inflammation, and delayed onset of age-related disease.
💡 Where to find her: https://www.linkedin.com/in/paola-sebastiani-5973a646

Episode highlights:

[00:00:00]: Introduction
[00:01:17]: Genetics and Longevity—Centenarian Studies
[00:03:17]: Genome-Wide Association Studies and Technological Advances
[00:04:20]: APOE, Genetic Variants, and Longevity Diversity
[00:05:58]: Polygenic Risk Scores and Longevity Prediction
[00:08:39]: Sample Sizes and Study Challenges in Longevity Research
[00:11:20]: Structural Variants, Mitochondrial DNA, and Data Sharing
[00:12:38]: Odds of Reaching Age 100—Historical Perspective
[00:15:22]: Healthspan, Compression of Morbidity, and Centenarian Quality of Life
[00:17:03]: Supercentenarians and Extreme Longevity
[00:21:02]: APOE Mechanisms, Inflammation, and Proteomic Signatures
[00:25:16]: Inflammation, Biomarkers, and Healthy Aging
[00:29:12]: Nutrition, Diet Balance, and Longevity
[00:32:28]: Food Versus Supplements—Practical Dietary Approaches
[00:35:02]: Molecular Profiles—Proteomics, Metabolomics, and Lipidomics
[00:39:01]: Gut Microbiome, Metabolomics, and Longevity Connections
[00:41:42]: Biological Pathways and Omics Insights in Centenarians
[00:45:01]: Protein Intake Patterns Across the Lifespan
[00:48:23]: Environmental Factors and Longevity
[00:50:18]: Physical Activity, Social Networks, and Objective Tracking
[00:53:45]: Offspring of Centenarians—Inheritance and Health Outcomes
[00:57:05]: Parental Longevity, Gender Differences, and Longevity Bias
[01:00:43]: Key Takeaways—Aging as a Positive Process
[01:03:25]: Closing Remarks and Episode Wrap-Up
[01:03:41]: End of Episode

For science-backed ways to live a healthier, longer life, download InsideTracker's Top 5 biomarkers for longevity eBook at insidetracker.com/podcast
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